Frederick, P. (1980). Creative sunprinting: Early photographic printing processes rediscovered. Focal Press.
Cita Chicago (17th ed.)Frederick, Peter. Creative Sunprinting: Early Photographic Printing Processes Rediscovered. London: Focal Press, 1980.
Cita MLA (9th ed.)Frederick, Peter. Creative Sunprinting: Early Photographic Printing Processes Rediscovered. Focal Press, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.